Fuel Circuit Pressure Gauge Diesel Engine Low Oil Circuit Tester Meter Car Truck. Diesel engine fuel injection pump low pressure oil circuit detection and diagnosis tool. C, Apply for Delphi Pump Tester & Dector. 1 x Fuel Circuit Pressure Gauge. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Interior Parts & Accessories\Gauges\Individual Gauges".The seller is "feelinggood_official" and is located in this country: CN. This item can be shipped worldwide.